gtk-window-decorator crashed with SIGSEGV in g_datalist_id_set_data_full()

I was not doing something special, I can't reproduce this bug

ProblemType: Crash
DistroRelease: Ubuntu 11.10
Package: compiz-gnome 1:0.9.5.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-7.9-generic 3.0.0
Uname: Linux 3.0.0-7-generic i686
Architecture: i386
Date: Tue Aug 2 11:53:06 2011
DistroCodename: oneiric
DistroVariant: ubuntu
ExecutablePath: /usr/bin/gtk-window-decorator
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
ProcCmdline: /usr/bin/gtk-window-decorator
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SegvAnalysis:
 Segfault happened at: 0x488d34 <g_datalist_id_set_data_full+356>: mov 0x0(%ebp),%ecx
 PC (0x00488d34) ok
 source "0x0(%ebp)" (0xaaaaaaa8) not located in a known VMA region (needed readable region)!
 destination "%ecx" ok
SegvReason: reading unknown VMA
Signal: 11
SourcePackage: compiz
StacktraceTop:
 g_datalist_id_set_data_full () from /lib/i386-linux-gnu/libglib-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
 ?? () from /usr/lib/i386-linux-gnu/libgtk-x11-2.0.so.0
 g_object_unref () from /usr/lib/i386-linux-gnu/libgobject-2.0.so.0
Title: gtk-window-decorator crashed with SIGSEGV in g_datalist_id_set_data_full()
UpgradeStatus: Upgraded to oneiric on 2011-08-01 (0 days ago)
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